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  1. Amp schematic for Sovtek/Svetlana tubes
  2. KT66 power tube amplifier
  3. 6П3С Plate Voltage
  4. Help choosing which Amplifier to build
  5. need help choosing between two amp schems
  6. 100 W-class Circlotron
  7. How can i match power tubes for Transconductance ?
  8. ef89 ef86
  9. ecc82 5687 preamp! audionote
  10. Hammond transformer questions
  11. IXYS CP20M45 IXC - anyone come across them ?
  12. Good Source for Nice Analog Panel Ammeters for 833C Build?
  13. Restore or build from new?
  14. Bob Danielak 826 Amp?
  15. Newbie Tube Power Supply
  16. What shall I build/do with this lot of tubes?
  17. Gingertubes ecl86 amp build
  18. DC restorer
  19. ECF801 Triode/Pentode any useful application ?
  20. Baking Tubes Procedure - Help...
  21. ECC82 normal vs ECC82 long plate
  22. 45 Type Push/Pull Amps
  23. leak tl12+
  24. Triode for 60V
  25. Tube Sound Processor
  26. McIntosh MC-275 buy or build an auto-bias tube amp?
  27. slp-90 clone, decent preamp!
  28. Triode St70 with hum
  29. SSR switching HT transformer?
  30. Tube Flash Drive
  31. 6S31B-P Grid current
  32. Tube Op Amp Building Blocks
  33. knight kb-85 restoration/mod
  34. Acceptable Power Supply Noise Limits?
  35. Loadlines and Microsoft Paint
  36. aikido noval all in one caps upgrade
  37. Specific grid stopper question
  38. GU50 Screen Driven, DC Coupled
  39. April fool?
  40. Providing both balanced and unbalanced inputs
  41. Best triode section inside ecc81 tube?
  42. opt for 45 tube
  43. Designing an Interstage Transformer
  44. Tube Amplifier Builder's Competition
  45. testing tubes for shorts
  46. Tube kits
  47. GU29 PP Amplifier
  48. 1625 tube radio?
  49. Measuring volts on an unloaded PSU secondary
  50. Suggest a preamp project for me.
  51. Audio Magazine
  52. Jadis DA88S schematic
  53. clone jadis jp200 preamp
  54. GROMMES LJ5
  55. Altec 1570B Feedback
  56. rebuilding 3tube zenith amp
  57. Effect of lower G2, EL84 PP
  58. Phono connection for pioneer sx34b
  59. Low output from two 6L6's for no apparent reason?
  60. Preamp design ok?
  61. GZ34 base?
  62. Tube Technology Genesis 100w monoblock manual?
  63. 6SN7 & 6V6 Push Pull - increase gain
  64. screen grid resistor value
  65. KT88 design questions
  66. el84/12ax7 se schematic needed!
  67. Broken AMC CVT 2100
  68. 98dB speaker - El Cheapo
  69. consolidated raw tube data
  70. Loadlines for Parallel SE outputs
  71. What is the correct load for an 845 triode?
  72. Rauland W-835A amplifier, choke field coil output?
  73. First use for Trancendent Sound Tube Analyzer
  74. Schematics/vintage
  75. APPJ PA0901A / Miniwatt N3 schematics
  76. APPJ PA0901A() schematics
  77. Help Needed: Lower Gain on a Tube Amp?
  78. Mullard ecc82 12au7 code help
  79. Wondering if I can use this XFMR to power two NYD 6SN7 1 bottle pres
  80. ST-70 Power Transformer
  81. Help Identifying a Tube - Westinghouse 12AX7A
  82. An incredible collection!
  83. Using only half of a stereo PP amp
  84. Low voltage vs. High Voltage Preamp.
  85. 6J6 Headphone hybrid amplifer?
  86. Hybrid headphone amp.....
  87. Please help with hum problem..
  88. Dead Audio Innovations Series 500
  89. Problems with E88CC / 6922 drawing grid current on power-up
  90. H.J.Leak TL12 "point one"
  91. Tubecad hybrird feedforward feedback shunt regulator
  92. 6v6 SE kit - any good?
  93. DBX 576 complete upgrade. Advices?
  94. help !! 45 tube
  95. 6P45S PP, simulation frustration.
  96. AMC CVT 3030 one more try - or dumpster
  97. Help for 211 HV PSU with damper diodes
  98. Flexible supply idea
  99. Equalizer on EL84 project
  100. parallel single-ended 12W6
  101. help improving/refurb a Fisher k-10 Tube spring reverb
  102. S.E.X. amp + Impedance switch build problems.
  103. problem with speaker
  104. EC80 as preamp tube.
  105. 6CJ3 Rectifier Connection Question ?
  106. AC Filament Voltage Question ?
  107. My new GU50 SE (all pentode)
  108. Ming Da MC-3R Schematics
  109. 12B4 PSE build thread
  110. Looking for options for 4 volt heater
  111. Help me,Art Audio Concerto
  112. heathkit t3 12sh7 tube
  113. PSU dimensioning for pre-amp
  114. Williamson preamp identification help wanted
  115. Adequate switch for UL-triode-pentode
  116. pl500 based integrated OTL amplifier
  117. Capacitor dielectric - high impedance headphones
  118. REQUEST FOR OPINIONS
  119. Mysterious LCR phono preamp
  120. Eimac 100TL Output Transformers and Bias Point ?
  121. Tube deterioration
  122. Heathkit XO-1 power cords
  123. EF86 Push-Pull "power"-amp
  124. Transformers!?
  125. Weird ground loop problem
  126. Re-caping Cayin A70-T
  127. A3 attenuator help for an Aikido line amp
  128. Driver Tube Power Supply Question ?
  129. Line Stage vs. Phase Inverter - 12A*7
  130. Intermittent Buzz Decware Zen SE84Bged
  131. Tamura F2011/el34 x 4
  132. E88CC/6922 battery supply
  133. Aikido 9-pin all-in-1 headphone amp problem
  134. Filament Transformer Question ?
  135. Load Resistance, etc., chart for Class A push pull 6L6s?
  136. Question about preamp, boost and line-stage
  137. help please
  138. Practical phase inverter article
  139. Tube vs. Jfet Preamp for Dynaco ST-35 tube power amp
  140. Rio W-41 no sound
  141. Help: TDA1541A DAC Output To Tube Gainstage
  142. Pieter's take on an all DHT headphone amplifier.
  143. toroidal chokes
  144. Truly Silly Transformer Question
  145. Elementary resistance question
  146. Russian 310A + 300B
  147. 1959 RCA tube amplifier needs help
  148. What's going on?
  149. Aikido 9-pin All-in-one Testing question
  150. Gyrator in Tail of LTP
  151. tubemaster EL84
  152. Silly transformer question
  153. Marant 8b bias meter
  154. Opera Consonance resitor question ?
  155. ADI's Double Dyna
  156. DuMont Stereo Tube Console late 50's - What to do?
  157. No Sound from Magnavox EL 1484-1 amp/phono
  158. Elevated Heater Question
  159. 6P45S/EL509 input capacitance in triode mode
  160. 6E6p-e Little Tiny Wire
  161. another aikido ?
  162. NOS 6P3S-e or cheap new 5881? Identify this tube..
  163. Contan Audio from Melbourne Aus, any info?
  164. Loctal Base Post
  165. Timber amp with solid copper plate as earth and ground plane
  166. Dynaco ST70 - Which tubes do you like?
  167. 6SL7 in parallel driving 6550
  168. Will this work as a heater for 300b?
  169. Tube grid resistance for 6P45S, fine?
  170. Akido help pls
  171. BEARD P101 information
  172. Got some 6n3c-e (6p3s-e)with blank bulb?
  173. Graaf GM-20
  174. medium power OTL circlotron amplifier
  175. Help me identity this amp
  176. Hajdinjak preamp + 2x mono tube amp -What to do?
  177. Moscode 600 Noisy Fan
  178. component reduction in signal chain
  179. Aikido with Stax
  180. Help need on Xindak XA3200MII hybrid pre-amplifier
  181. ideas for tube burn in / bias match station
  182. KT120 triode operation single stage amp
  183. Question regarding 7199 Tube wiring
  184. Why do modern PP OPTs have 16 Ohm taps?
  185. 10M45 current source
  186. 12bh7 in place of ecc82
  187. High voltage winding no center tap?
  188. Marantz 8b recap
  189. Pair Quad II in all original condition... restore or sell
  190. Where to find tube designers for hire?
  191. 10M45S problem
  192. 300B Load Line and Bias?
  193. Looking for little help with Glassware Janus shunt reg
  194. Quick question about grounding
  195. Source for 6jg5 or equivalent in Europe
  196. Need your help: Change from el34 to 6550 ends in a desaster
  197. conn el 6026 tube amp schematic for hifi stereo
  198. GE 211 "flash" question
  199. Learned something (the hard way) about mica capacitors
  200. Aikido octal floating output
  201. Screened cable for rewiring valve amp
  202. Fault developed, producing static noise
  203. EL34+Ecc83 amp hum
  204. Gold plated Dynaco ST-70 for $3k
  205. Preamp noise level ?
  206. KOSS A1220 - Vintage Tube Headphone Amp - Diagnose and Mod questions...
  207. Rectifier tube cathode and heater
  208. testing voltage on tube filament, without the tube
  209. New semi-custom metal chassis manufacturer
  210. 55 WPC 1625 Mono Block Amps
  211. Masco C-10 Mic/Phono Amp
  212. New driver stage for dynaco mk3
  213. Power Transformer Issue
  214. Marantz 8B
  215. Safety questions
  216. amplifier output impedance measurement
  217. Regulated Vs Non-regulated linear Power Supply
  218. Single RIAA passive eq design for differential DC coupled tube circuit
  219. Amp to Drive Lowther DX3's in Rear Loaded Horn
  220. Anyone know what's going on with Antek?
  221. Sources of 120hz hum?
  222. make adapter from 6n2p to 12ax7
  223. DC coupling with a choke?
  224. help with hum 12ax7 preamp
  225. Signal->crossover->3 amps->speaker
  226. I want to build an inexpensive EL 84 integrated amp with a phono section.
  227. Scott17 KT88 SE Tube Amp Build Log
  228. heater currents
  229. 300B Orientation so logo faces forward
  230. Leak stereo 20
  231. Suggestion: Output tube in SET amp for midbass frequency
  232. Monster Hammond Output XFMRs
  233. 6A3 / 6B4G Design
  234. DC7 MK3 up and running.
  235. Marrantz Model 9 Transformer Buy
  236. 6N2P/6Н2П low plate current increases noise?
  237. first tube amp
  238. rogers cadet 111 or Quad 11
  239. New FM-3 Motherboard
  240. 12ax7(ecc83) and 6n2p 12ax7...........differents??
  241. Heater supply
  242. Very upgraded ST-70 kit/build w/ 6550 tubes
  243. Marantz 8b Electrolytics
  244. How biasing mA in tubes
  245. PSU id and help (psu designer ii)
  246. The all DHT SET Headphone Amp
  247. Assistance with rectifiers in PSUD
  248. Music Angel XD 500 MkII Bias setting
  249. Magnoval
  250. S.E.X. amp plate chokes replacements

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